.vertical {
  display: flex;
  flex-direction: column;
}

.horizontal {
  display: flex;
  flex-direction: row;
}

.vertical.center,
.horizontal.center {
  align-items: center;
  justify-content: center;
}

.vertical.spread,
.horizontal.spread {
  align-items: center;
  justify-content: space-between;
}